Cassette taped from a '78 Recording Service Disk.
Three X Sisters began radio in USA in 1931, and was first chose by a CBS sponsor.
First appeared on the BBC in England 1927. On CBS,ABC,NBC,WNEW,WJZ,WEAF stations based in New York City. First on airwaves out of Radio City Music Hall.
(technical work by Glenn A. Santos, grandson of Pearl B. Santos)